| 1. | in methane molecule |
A. Double bond | |
B. Trivalent bonds | |
C. A single covalent bond | |
D. None of these |
| 2. | The nature of ethynyl molecule is |
A. unilinear | |
B. tetrahedron | |
C. plane triangular | |
D. octahedral |
| 3. | Which of the following compound has tetrahedral shape? |
A. ammonia | |
B. carbon tetrachloride | |
C. water | |
D. acetylene |
| 4. | The melting point and boiling point of covalent compounds are low because |
A. it is less active | |
B. they do not ionize in water | |
C. They are usually insoluble in water | |
D. Intermolecular force is weak in them |
| 5. | in sodium chloride |
A. combination bond with | |
B. sub-coordinate bond | |
C. electronegative bond | |
D. none of these |
| 6. | what happens when a chemical bond is formed |
A. energy is always absorbed | |
B. energy is always released | |
C. The more energy is absorbed, the more it is released | |
D. energy is neither absorbed nor released |
| 7. | The shape of carbon tetra chloride is |
A. pyramidal | |
B. square plane | |
C. tetrahedral | |
D. distorted tetrahedron |
| 8. | Which of the following compounds does not have hydrogen bonding |
A. methane | |
B. Water | |
C. ammonia | |
D. methanoic acid |
| 9. | In which of the following compounds hydrogen bonding is present |
A. hydrogen fluoride | |
B. hydrochloric acid | |
C. hydrogen fluoride | |
D. hydrogen iodide |
| 10. | The compound having linear structure is |
A. carbon dioxide | |
B. nitrogen dioxide | |
C. sulfur dioxide | |
D. silicon dioxide |